HERE WE HAVE THE BEST REBUILT MUNCIE M21 4 SPEED MANUAL TRANSMISSION FROM THE YEAR OF 1967. THIS UNIT IS THE CLOSE RATIO MODEL. THE RATIO IS: 2.20-1.64-1.28-1.00-2.27 THE INPUT HAS 26TH WITH 1 LINE. AND THE CLUSTER GEAR COUNTS ARE 27-22-19-17TH. IT HAS THE 1 INCH PIN AND THE PRODUCTION DATE ON IT WAS JANUARY 6, 1967. THE CASE NUMBER IS 3885010. THE SERIAL NUMBER IS P7A06. THE BELL HOUSING NUMBER IS 464697. THE VIN NUMBER IS 7L135413. THIS UNIT HAS BEEN COMPLETELY GONE THROUGH REPLACING ALL BEARINGS, GASKETS, SEALS, SMALL PARTS AND SYNCHRO RINGS. THE BELL HOUSING HAD A SMALL 3/4 INCH CRACK BUT WAS PROFESSIONALLY WELDED AND WONT AFFECT THE PERFORMANCE OF THE TRANSMISSION. THIS IS IN FACT, THE BEST TRANSMISSION IN ITS CLASS ON EBAY!!!!!!!!!!!!! YOU WILL NOT FIND ANY BETTER! IF YOU HAVE ANY QUESTIONS, PLEASE FEEL FREE TO CONTACT CHARLIE AT 661-298-8827